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Incorporating the best electronic elements of the original ProLogue Series, plus selected ground-breaking features from the more advanced DiaLogue Series, the next generation ProLogue Premium Stereo PreAmplifier sets a new benchmark in high-performance audio.New power transformers. Heavy-duty, dual-mono, power transformers increase control and detail. Additional windings were added to each transformer for improved synergy with the optional PhonoLogue MM Phonostage. The preamp weighs in at a substantial 17kg.

Home theater pass-thru. Straight from the critically-acclaimed DiaLogue Series, this direct-line circuitry means less noise and coloration over unity gain circuits.New front end circuitry combines with the improved power transformers to further lower distortion, dropping by a factor of 20 at output levels above one volt! This in turn dramatically improves sound quality.

PTP-circuit. If the power transformer should overheat, this innovative "Power Transformer Protection" circuit cuts primary power, allows the preamp to cool down, then resets itself.

Full-function remote. Slim, anodized aluminum remote, controls volume, mute, and source selection, as well as Play/pause and Stop/eject functions of the new ProLogue Premium CD Player.

Secrets of Home Theater and High Fidelity by John E. Johnson, Jr - Nov 2010... producing lush, warm sound that put me into deep relaxation. There is a smoothness to an all-tube hi-fi system that cannot be matched when there is solid state anywhere in the signal path.

... the music was conveyed with convincing detail and dynamics ...

Female voices are beautiful enough without second order harmonics (only a geek would say something like that), but through triodes . . . gorgeous. Sutton's voice soothed my long day into a restful relaxation in the evening sitting by the window. No overly sibilant words to the music. Just clean, detailed, silk.

Brass instruments are another area of concern with an amplifier that produces too much odd order harmonics. Since the PrimaLuna ProLogue Premium preamp doesn't do that, the brass - in this case, French horns - were smooth, yet delivering the slight edge that horns tend to have.

... excellent value. It is beautifully constructed and has a warm lush sound that all of us tubeophiles love to listen to. If you have an interest in getting into the world of valve sound, this unit represents a very affordable way to get there.